curl -X POST "https://staging-api.loyalty.lt/lt/shop/xml-import/from-file" \
  -H "X-API-Key: your_api_key" \
  -H "X-API-Secret: your_api_secret" \
  -F "xml_file=@products.xml"

{
  "success": true,
  "code": 200,
  "request_id": "550e8400-e29b-41d4-a716-446655440000",
  "message": "XML import completed successfully",
  "data": {
    "products_created": 150,
    "products_updated": 45,
    "offers_created": 150,
    "offers_updated": 45,
    "errors": []
  }
}